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Author Topic: Could whirring noise from the rear be scored brakes?  (Read 4095 times)

Offline daveybrown1991

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Could whirring noise from the rear be scored brakes?
« on: 25 April 2019, 20:01 »
I've had a whirr on my GTI from the rear since i bought it, but i seem to be noticing it more especially at low speed. The rear discs are heavily scored (I've seen this is quite common). Could it be the brakes, as it seems to be coming from both sides? Anyone else had this? It's a 66 plate with 22k on the clock
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Offline Watts

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Re: Could whirring noise from the rear be scored brakes?
« Reply #1 on: 25 April 2019, 20:13 »
Perhaps the pads are sticking on slightly? I get this from my n/s rear and that disc is worn more than the o/s.
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Offline monsta

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Re: Could whirring noise from the rear be scored brakes?
« Reply #2 on: 25 April 2019, 20:33 »
Is it a whine or more of a grind? Discs would grind, tyres will whine.
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Offline Finglonga

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Re: Could whirring noise from the rear be scored brakes?
« Reply #3 on: 25 April 2019, 20:45 »
The rear tyres when partially worn sound like worn bearings, the rear of the car is so in need of sound deadening. The brakes, as said would grind.
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Offline daveybrown1991

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Re: Could whirring noise from the rear be scored brakes?
« Reply #4 on: 25 April 2019, 20:48 »
Thanks, the tyres are getting pretty worn so there's a good chance this is what it is
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Offline Watts

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Re: Could whirring noise from the rear be scored brakes?
« Reply #5 on: 25 April 2019, 20:50 »
If the brakes are rubbing slightly they won't make a grinding sound.
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Offline fredgroves

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Re: Could whirring noise from the rear be scored brakes?
« Reply #6 on: 26 April 2019, 09:26 »
It could be feathering of the inside edges of the rears.... it sounds like a wheel bearing when it happens and the noise you hear at low(ish) speeds and changes in pitch as you accelerate or decelerate.

On the other hand, the rears on a Mk7 wear really really really slowly. I got ~65k out of my last Mk7 before the rears needed doing and even then, it was because of feathering - not because they actually had zero tread left!

Get a tyre place to take a look - tell them that's what you think it might be so they jack it up to inspect.
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Offline Talk-torque

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Re: Could whirring noise from the rear be scored brakes?
« Reply #7 on: 27 April 2019, 07:14 »
As above - feathered, or cupped, rear tyres. They wear on the inside edge, due to the suspension geometry. If you run your hand around the inside edge of one of the tyres you will find it runs easier one way, than the other, like a saw blade. This is the feathering, or cupping, that makes the noise.
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Offline mcmaddy

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Re: Could whirring noise from the rear be scored brakes?
« Reply #8 on: 27 April 2019, 08:28 »
Feathering used to be a problem on mk5s but it's not really an issue on mk7s.
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Offline monsta

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Re: Could whirring noise from the rear be scored brakes?
« Reply #9 on: 29 April 2019, 21:22 »
Quote from: mcmaddy on 27 April 2019, 08:28
Feathering used to be a problem on mk5s but it's not really an issue on mk7s.

I disagree with that statement, I think mine is doing it a little with a nearly new set of Michelin PS4s on and a 4 wheel alignment carried out...
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